POSEIDON SE7EN+ - Safe Diving with the Poseidon SE7 EN

Poseidon SE7EN+ User Manual Appendix 3 Page 122
Safe diving with the Poseidon SE7EN+
• NEVER hold your breath when breathing underwater!
• ALWAYS rell the CO
2
absorbent cartridge whenever the oxygen cylinder is relled or
replaced.
• ALWAYS remove the sponge from the top (if tted) and bottom of the CO
2
absorbent
cartridge after every dive and squeeze as much moisture out of the sponge as possible. It
is extremely important to allow this sponge to dry as much as possible before starting a
new dive.
• If you feel the mouthpiece vibrate for more than a brief pulse, bailout IMMEDIATELY and
look at the display.
• If you hear the audio alarm, IMMEDIATELY check the LCD display and prepare to
terminate the dive.
• If the Heads-Up Display light on the mouthpiece is STEADY ON, then ASCEND at a safe
and controlled rate to the surface.
• If the Heads-Up Display (HUD) light on the mouthpiece FLASHES, then STOP, look at the
LCD screen. A short single ash is a reminder to you to keep track of your PO
2
, which is
shown in the upper left eld of the display. If there is a problem, the HUD light will
continue to ash, and there may be a symbol in the upper right eld of the display ashing
to indicate the nature of the problem. For example, the directional arrows advise you to
go up (ascend) if you need to end the dive or if you need to go shallower; or go down
(descend) if you have ascended above a required decompression ceiling. Other elds on
IMPORTANT:
Do NOT remove the battery while the electronics system is active.
Failure to complete a proper shut-down procedure will cause
the battery CPU to remain active, and drain the power supply
unnecessarily.
the display may ash to indicate what the problem is. More information on the functional-
ity of the display is presented in Chapter 3.
• When in doubt, bail out - switch to open-circuit (OC) and ascend in a controlled manner
to the surface.
• The default setpoint control algorithm is designed to allow for hands-off control of the
system PO
2
during all phases of a dive. The Poseidon SE7EN+ uses a proprietary method
that begins with a default control setpoint on the surface of 0.5 bar and gradually
increases PO
2
to a maximum automatic value of 1.2 bar at a depth of 15 m / 50 ft.
Beyond this depth the system will automatically control to a setpoint of 1.2 bar to the
maximum operating depth of the rig.
IMPORTANT:
Do NOT remove the battery when the battery or the e-module is
wet to avoid problems with corrosion in the battery connectors or
the e-module’s battery connectors. Corrosion in the connectors
can cause power- or communication failure.